The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 2004
Filed:
Aug. 09, 2000
Klemens Mathauer, Ludwigshafen, DE;
Arno Böhm, Mannheim, DE;
Walter Mächtle, Ludwigshafen, DE;
Peter Rossmanith, Mannheim, DE;
Sabine Kielhorn-Bayer, Maxdorf, DE;
Klaus Müllen, Köln, DE;
Ulrike Rohr, Mainz, DE;
Friedrich-Wilhelm Raulfs, Mannheim, DE;
Ulrike Schlösser, Neustadt, DE;
Wolfgang Schrof, Neuleiningen, DE;
Harutyun Hanciogullari, Limburgerhof, DE;
Karl Siemensmeyer, Frankenthal, DE;
Paul Delavier, Neustadt, DE;
Rüdiger Sens, Ludwigshafen, DE;
Torsten Freund, Limburgerhof, DE;
Takahiro Ikeda, Yokkaichi, JP;
Takanori Wakebe, Mochibuku, JP;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The present invention relates to a process for preparing dye-comprising aqueous polymer dispersions by free-radical aqueous emulsion polymerization of ethylenically unsaturated monomers in the presence of free-radical initiators, in which at least some of the monomers are employed in the form of an oil-in-water emulsion E1 whose disperse phase comprises at least one oil-soluble dye, wherein the disperse phase of E1 is formed essentially of dye-comprising monomer droplets having a diameter <500 nm. The present invention also relates to perylene dyes of the formula III as set forth in claim 35. The present invention relates in addition to dye-comprising formulations which comprise the dye-comprising polymers of the invention and to pigmented formulations which comprise a polymer of the invention comprising optical brightener.